Planet Earth

Partly it's the stirring musical score; partly, the memorable footage of animals and plants in unfamiliar, dramatic shots.

Whatever the case, the trailer for the upcoming 11-part Planet Earth mini-series on the Discovery Channel gives me chills every time I see it.

More than five years in the making, PLANET EARTH redefines blue-chip natural history filmmaking and continues the Discovery Channel mission to provide the highest quality programming in the world. The 11-part series will amaze viewers with never-before-seen animal behaviors, startling views of locations captured by cameras for the first time, and unprecedented high-definition production techniques. Award-winning actress and conservationist Sigourney Weaver is the series' narrator.

PLANET EARTH airs on consecutive Sundays from March 25 through April 22, 2007, on Discovery Channel and in high definition on Discovery HD Theater.

Even better, they've created a Google Earth tour with video clips from locations around the world their crews visited.